Answer:
B) 83.457
Step-by-step explanation:
80 + 3 + 0.4 + 0.05 + 0.007 = 83.457
Answer:
try D
Step-by-step explanation:
Answer:
x=6
Step-by-step explanation:
Given the x-intercepts of a parabola: 
The equation of symmetry at the parabola's vertex is x=h
Where 
In this case,

Therefore, the line of symmetry of the parabola is x=6 and is also the x-coordinate of the parabola's vertex.
I think the answer is the third one
It is complementary and value of x is 20